CVE-2016-6391
Summary
| CVE | CVE-2016-6391 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-10-05 20:59:06 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| Description | Cisco IOS 12.2 and 15.0 through 15.3 allows remote attackers to cause a denial of service (traffic-processing outage) via a crafted series of Common Industrial Protocol (CIP) requests, aka Bug ID CSCur69036. |
Risk And Classification
Primary CVSS: v3.0 7.5 HIGH from [email protected]
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.007430000 probability, percentile 0.730970000 (date 2026-05-07)
Problem Types: CWE-399 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
CompleteAV:N/AC:L/Au:N/C:N/I:N/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Cisco | Ios | 12.2\(44\)ex | All | All | All |
| Operating System | Cisco | Ios | 12.2\(44\)ex1 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(46\)se | All | All | All |
| Operating System | Cisco | Ios | 12.2\(46\)se1 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(46\)se2 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(50\)se | All | All | All |
| Operating System | Cisco | Ios | 12.2\(50\)se1 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(50\)se2 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(50\)se3 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(50\)se4 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(50\)se5 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(52\)se | All | All | All |
| Operating System | Cisco | Ios | 12.2\(52\)se1 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se10 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se3 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se4 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se5 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se6 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se7 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se8 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(55\)se9 | All | All | All |
| Operating System | Cisco | Ios | 12.2\(58\)se2 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(1\)ey | All | All | All |
| Operating System | Cisco | Ios | 15.0\(1\)ey1 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(1\)ey2 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)eb | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)ey | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)ey1 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)ey2 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)ey3 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se1 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se2 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se3 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se4 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se5 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se6 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se7 | All | All | All |
| Operating System | Cisco | Ios | 15.0\(2\)se9 | All | All | All |
| Operating System | Cisco | Ios | 15.2\(1\)ey | All | All | All |
| Operating System | Cisco | Ios | 15.2\(2\)e | All | All | All |
| Operating System | Cisco | Ios | 15.2\(2\)e1 | All | All | All |
| Operating System | Cisco | Ios | 15.2\(2\)e2 | All | All | All |
| Operating System | Cisco | Ios | 15.2\(2\)e4 | All | All | All |
| Operating System | Cisco | Ios | 15.2\(3\)ea | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja1 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja1m | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja1n | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja4 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja5 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja7 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja77 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja8 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)ja9 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jaa | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jab | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jax | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jax1 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jax2 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jb | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jb75 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb1 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb2 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb4 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb5 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb50 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb6 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb6a | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jbb8 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jc | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jn3 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jn4 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jn7 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jn8 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnb | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnb1 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnb2 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnb3 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnc | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnc1 | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnp | All | All | All |
| Operating System | Cisco | Ios | 15.3\(3\)jnp1 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Cisco IOS Software Common Industrial Protocol Request Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | tools.cisco.com | Vendor Advisory |
| Cisco IOS/IOS XE Multiple Flaws Let Remote Users Cause the Target System to Reload - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| Cisco IOS Software CVE-2016-6391 Remote Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.